Synthesis, characterization and self-assemblies of magnetite nanoparticles

Tianzhong Yang; Chengmin Shen; Haitao Yang; Congwen Xiao; Zhichuan Xu; Shutang Chen; Dongxia Shi; Hongjun Gao

doi:10.1002/sia.2329

Synthesis, characterization and self-assemblies of magnetite nanoparticles

Tianzhong Yang, Chengmin Shen, Haitao Yang, Congwen Xiao, Zhichuan Xu, Shutang Chen, Dongxia Shi, Hongjun Gao^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Monodisperse Fe₃O₄ nanoparticles (NPs) with a narrow size distribution were synthesized by a high-temperature solution-phase method. The diameter of magnetic NPs was tuned from 2 to 13 nm by varying the reaction conditions, and the monolayer and multilayer self-assemblies of the NPs were obtained. A few kinds of the assemblies are presented and the reasons that drive the particles to form the superlattices are discussed. The physical-property- measurement system (PPMS) results showed that the as-synthesized NPs are ferrimagnetic at low temperatures (5 K) while they are superparamagnetic at room temperature (300 K). In addition, the particles were transformed into hydrophilic ones by an exchange reaction.

Original language	English
Pages (from-to)	1063-1067
Number of pages	5
Journal	Surface and Interface Analysis
Volume	38
Issue number	6
DOIs	https://doi.org/10.1002/sia.2329
Publication status	Published - Jun 2006
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Keywords

Magnetic properties
Nanoparticles
Self-assembly

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10.1002/sia.2329

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T1 - Synthesis, characterization and self-assemblies of magnetite nanoparticles

AU - Yang, Tianzhong

AU - Shen, Chengmin

AU - Yang, Haitao

AU - Xiao, Congwen

AU - Xu, Zhichuan

AU - Chen, Shutang

AU - Shi, Dongxia

AU - Gao, Hongjun

PY - 2006/6

Y1 - 2006/6

N2 - Monodisperse Fe3O4 nanoparticles (NPs) with a narrow size distribution were synthesized by a high-temperature solution-phase method. The diameter of magnetic NPs was tuned from 2 to 13 nm by varying the reaction conditions, and the monolayer and multilayer self-assemblies of the NPs were obtained. A few kinds of the assemblies are presented and the reasons that drive the particles to form the superlattices are discussed. The physical-property- measurement system (PPMS) results showed that the as-synthesized NPs are ferrimagnetic at low temperatures (5 K) while they are superparamagnetic at room temperature (300 K). In addition, the particles were transformed into hydrophilic ones by an exchange reaction.

AB - Monodisperse Fe3O4 nanoparticles (NPs) with a narrow size distribution were synthesized by a high-temperature solution-phase method. The diameter of magnetic NPs was tuned from 2 to 13 nm by varying the reaction conditions, and the monolayer and multilayer self-assemblies of the NPs were obtained. A few kinds of the assemblies are presented and the reasons that drive the particles to form the superlattices are discussed. The physical-property- measurement system (PPMS) results showed that the as-synthesized NPs are ferrimagnetic at low temperatures (5 K) while they are superparamagnetic at room temperature (300 K). In addition, the particles were transformed into hydrophilic ones by an exchange reaction.

KW - Magnetic properties

KW - Nanoparticles

KW - Self-assembly

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Synthesis, characterization and self-assemblies of magnetite nanoparticles

Abstract

ASJC Scopus Subject Areas

Keywords

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